1=> Did you apply for Production after testing the sandbox?
2=> After applying you are assigned a contact person, who you exchange emails with as they guide you through.
3=> You are then created a partner portal account that you set up your production environment to get the Subscription keys.
4=> When you test and get a message prompt, thats it.
NOTE:
# Security of your whitelisted IP Address is very important.
# The sandbox and Production respond statuses on success on error, logivally synchronise what your customer should observe or be redirected after the status.